Question

我有以下查询

select *
from
    reservation r,
    (
        assignment a
        INNER JOIN class_ c ON a.class_id = c.uniqueid
        INNER JOIN scheduling_subpart ss ON c.subpart_id = ss.uniqueid
        INNER JOIN instr_offering_config ioc ON ss.config_id = ioc.uniqueid
    ) as io
where
    io.solution_id in (32931842) and
    io = r.offering_id

注意：solution_id是分配表上的列。

我希望括号中的who内连接用io别名但我得到语法错误：

检查与您的MySQL服务器版本相对应的手册，以便在'（32931842）和io = r.offering_id'
中使用“io，io.solution_id”附近使用正确的语法

Answer 1

看起来你的意思是：

select *
from
reservation r,
(
    select * from assignment a ///  You missed the  select * from 
    INNER JOIN class_ c ON a.class_id = c.uniqueid
    INNER JOIN scheduling_subpart ss ON c.subpart_id = ss.uniqueid
    INNER JOIN instr_offering_config ioc ON ss.config_id = ioc.uniqueid
) as io
where
io.solution_id in (32931842) and
io = r.offering_id

Mysql别名是内连接链的问题

1 个答案: